In addition, Vδ1 T cells can recognize ephrin receptor A2 (EphA2) (24) and MHC-related protein 1 (25), while Vδ3 T cells are activated by annexin A2 (26) on tumor cells and Vδ5 T cells bind endothelial protein C receptor (EPCR) on cytomegalovirus-infected and epithelial tumor cells (27) through their respective TCRs. This evidence concerns the gene PROCR and neoplasm.